Added openmp checks and revert to posix threads if openmp not supported by compiler. Close bug #230982.

(Portage version: 2.1.4.4)

3 files changed, 67 insertions, 22 deletions

diff --git a/sci-libs/fftw/files/fftw-2.1.5-configure.in.patch b/sci-libs/fftw/files/fftw-2.1.5-configure.in.patch
index 62b388590e12..718e74686f62 100644
--- a/sci-libs/fftw/files/fftw-2.1.5-configure.in.patch
+++ b/sci-libs/fftw/files/fftw-2.1.5-configure.in.patch
@@ -1,6 +1,7 @@
---- configure.in.orig	2008-06-22 17:01:59.013047109 +0100
-+++ configure.in	2008-06-22 17:17:39.421924454 +0100
-@@ -1,6 +1,7 @@
+--- configure.in.orig	2008-07-09 17:52:16.762461233 +0100
++++ configure.in	2008-07-09 18:34:13.106471656 +0100
+@@ -1,6 +1,8 @@
++
  dnl Process this file with autoconf to produce a configure script.
  AC_INIT(fftw/planner.c)
  AM_INIT_AUTOMAKE(fftw, 2.1.5)
@@ -8,7 +9,7 @@
  
  dnl This is the version info according to the libtool versioning system.
  dnl It does *not* correspond to the release number.
-@@ -27,7 +28,7 @@
+@@ -27,7 +29,7 @@
  
  AC_ARG_ENABLE(float, [  --enable-float          compile fftw for single precision], enable_float=$enableval, enable_float=no)
  if test "$enable_float" = "yes"; then
@@ -17,7 +18,7 @@
  fi
  
  FFTW_PREFIX=""
-@@ -56,27 +57,27 @@
+@@ -56,27 +58,27 @@
  
  AC_ARG_ENABLE(i386-hacks, [  --enable-i386-hacks     enable gcc/x86 specific performance hacks], ok=$enableval, ok=no)
  if test "$ok" = "yes"; then
@@ -50,6 +51,14 @@
  fi
  
  dnl -----------------------------------------------------------------------
+@@ -90,7 +92,6 @@
+ ACX_PROG_CC_EGCS
+ AC_PROG_INSTALL
+ AC_PROG_MAKE_SET
+-AC_PROG_RANLIB
+ AC_PROG_LN_S
+ AM_PROG_LIBTOOL
+ AC_CHECK_PROG(PERL, perl, perl, echo perl)
 @@ -115,7 +116,7 @@
  dnl -----------------------------------------------------------------------
  
@@ -95,7 +104,17 @@
  fi
  
  
-@@ -230,6 +231,16 @@
+@@ -221,15 +222,25 @@
+ FFTW_THREADS_INCLUDELIST=""
+ FFTW_THREADS_PROGLIST=""
+ THREADLIBS=""
++omp_enabler=unknown
+ if test "$enable_threads" = "yes"; then
+ 	if test "$with_openmp"x != nox; then
+ 		AC_MSG_CHECKING(how to enable OpenMP)
+-		omp_enabler=unknown
+ 		save_CFLAGS="$CFLAGS"
+ 		CFLAGS="$save_CFLAGS -omp"
  		AC_TRY_LINK_FUNC(omp_set_num_threads,THREADLIBS=" "
  			omp_enabler="$CC -omp")
  		if test -z "$THREADLIBS"; then
@@ -104,24 +123,43 @@
 +				omp_enabler="$CC -fopenmp")
 +		fi
 +		if test -z "$THREADLIBS"; then
-+			CFLAGS="$save_CFLAGS -fopenmp"
-+			AC_TRY_LINK_FUNC(omp_set_num_threads,THREADLIBS=""
++			CFLAGS="$save_CFLAGS -openmp"
++			AC_TRY_LINK_FUNC(omp_set_num_threads,THREADLIBS=" "
 +				omp_enabler="$CC -openmp")
 +		fi
 +		if test -z "$THREADLIBS"; then
  			CFLAGS="$save_CFLAGS -mp"
  			AC_TRY_LINK_FUNC(omp_set_num_threads,THREADLIBS=" "
  				omp_enabler="$CC -mp")
-@@ -243,7 +249,7 @@
- 		if test -z "$THREADLIBS"; then
- 			AC_MSG_ERROR([don't know how to enable OpenMP])
+@@ -240,68 +251,70 @@
+ 				omp_enabler="automatic")
+ 		fi
+ 		AC_MSG_RESULT($omp_enabler)
+-		if test -z "$THREADLIBS"; then
+-			AC_MSG_ERROR([don't know how to enable OpenMP])
++		if test x"$omp_enabler" != x"unknown"; then
++		       AC_DEFINE(FFTW_USING_OPENMP_THREADS,1,[Using OpenMP threads])
++		else
++		       AC_MSG_WARN([don't know how to enable OpenMP, reverting to POSIX threads])
  		fi
 -		AC_DEFINE(FFTW_USING_OPENMP_THREADS)
-+		AC_DEFINE(FFTW_USING_OPENMP_THREADS,1,[Using OpenMP threads])
++
  	fi
  	if test "$with_sgimp"x != nox; then
  		AC_MSG_CHECKING(how to enable SGI MP)
-@@ -261,7 +267,7 @@
+ 		mp_enabler=unknown
+ 		save_CFLAGS="$CFLAGS"
+ 		CFLAGS="$save_CFLAGS -mp"
+-		AC_TRY_LINK_FUNC(mp_set_numthreads,THREADLIBS=" "
++		AC_TRY_LINK_FUNC(mp_set_numthreads,THREADLIBS=""
+ 			mp_enabler="$CC -mp")
+ 		if test -z "$THREADLIBS"; then
+ 			CFLAGS="$save_CFLAGS"
+-			AC_TRY_LINK_FUNC(mp_numthreads,THREADLIBS=" "
++			AC_TRY_LINK_FUNC(mp_numthreads,THREADLIBS=""
+ 				mp_enabler="automatic")
+ 		fi
+ 		AC_MSG_RESULT($mp_enabler)
  		if test -z "$THREADLIBS"; then 
  			AC_MSG_ERROR([don't know how to enable SGI MP])
  		fi
@@ -130,7 +168,9 @@
  	fi
  
  	# POSIX threads, the default choice:
-@@ -270,38 +276,38 @@
+-	if test -z "$THREADLIBS"; then
++	if test x"$omp_enabler" = x"unknown" ; then
+ 		sinclude(acx_pthread.m4)
  		ACX_PTHREAD([THREADLIBS="$PTHREAD_LIBS "
  	                     CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
  	                     CC="$PTHREAD_CC"
@@ -175,7 +215,7 @@
  	fi
  	if test -z "$THREADLIBS"; then
  		AC_MSG_ERROR(couldn't find threads library for --enable-threads)
-@@ -334,7 +340,7 @@
+@@ -334,7 +347,7 @@
  	CC="$MPICC"
  	ok=yes
  	AC_TRY_LINK([#include <mpi.h>
diff --git a/sci-libs/fftw/files/fftw-3.1.2-configure.ac.patch b/sci-libs/fftw/files/fftw-3.1.2-configure.ac.patch
index de54a25dab05..713c2a7d7ed7 100644
--- a/sci-libs/fftw/files/fftw-3.1.2-configure.ac.patch
+++ b/sci-libs/fftw/files/fftw-3.1.2-configure.ac.patch
@@ -1,5 +1,5 @@
---- configure.ac.orig	2008-06-30 23:10:27.431674828 +0100
-+++ configure.ac	2008-06-30 23:50:59.266804845 +0100
+--- configure.ac.orig	2008-07-10 11:29:58.506230457 +0100
++++ configure.ac	2008-07-10 11:49:45.171417438 +0100
 @@ -135,7 +135,7 @@
  AC_PROG_CC
  AX_COMPILER_VENDOR
@@ -18,7 +18,7 @@
  
  dnl Checks for header files.
  AC_HEADER_STDC
-@@ -362,7 +364,7 @@
+@@ -362,10 +364,10 @@
  THREADLIBS=""
  if test "$enable_threads" = "yes"; then
  	if test "$with_openmp"x != nox; then
@@ -26,4 +26,8 @@
 +		AX_OPENMP([THREADLIBS="$OPENMP_LIBS"
  		  AC_DEFINE(USING_OPENMP_THREADS, 1, [Define if we have and are using OpenMP multithreading directives])
                    CFLAGS="$CFLAGS $OPENMP_CFLAGS"],
- 		  [AC_MSG_ERROR([don't know how to enable OpenMP])])
+-		  [AC_MSG_ERROR([don't know how to enable OpenMP])])
++		  [AC_MSG_WARN([don't know how to enable OpenMP, reverting to POSIX threads])])
+ 	fi
+ 
+ 	# POSIX threads, the default choice:
diff --git a/sci-libs/fftw/files/fftw-3.1.2-openmp.patch b/sci-libs/fftw/files/fftw-3.1.2-openmp.patch
index 5ccfea691a8f..b1948b3ca463 100644
--- a/sci-libs/fftw/files/fftw-3.1.2-openmp.patch
+++ b/sci-libs/fftw/files/fftw-3.1.2-openmp.patch
@@ -1,9 +1,10 @@
---- m4/ax_openmp.m4.orig	2008-07-01 00:14:48.814076874 +0100
-+++ m4/ax_openmp.m4	2008-06-30 23:42:30.534809664 +0100
-@@ -59,6 +59,9 @@
+--- m4/ax_openmp.m4.orig	2008-07-10 11:33:17.361562576 +0100
++++ m4/ax_openmp.m4	2008-07-10 12:05:14.280159723 +0100
+@@ -59,6 +59,10 @@
  else
    if test "x$ax_cv_[]_AC_LANG_ABBREV[]_openmp" != "xnone"; then
      OPENMP_[]_AC_LANG_PREFIX[]FLAGS=$ax_cv_[]_AC_LANG_ABBREV[]_openmp
++    OPENMP_LIBS=" "
 +    if test "x$ax_cv_[]_AC_LANG_ABBREV[]_openmp" = "x-fopenmp"; then
 +        OPENMP_LIBS="-lgomp"
 +    fi